Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-8358— Heap buffer overflow in spreadsheet tracked-changes import

Quick assessment

Affected
The Document Foundation LibreOffice
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

The Document Foundation LibreOffice是The Document Foundation的办公套件。 The Document Foundation LibreOffice存在缓冲区错误漏洞，该漏洞源于导入电子表格文档中的修订变更时，对于重复使用的相同变更标识符，导入器会将一个变更对象视为不同且更大的类型，导致堆缓冲区溢出，从而可能写入超出分配内存区域。

AI Predicted 8.6 Difficulty: Easy EPSS 0.17% · P5

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
The Document Foundation LibreOffice 25.8< < 25.8.7 affected
26.2< < 26.2.4 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-8358

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Heap buffer overflow in spreadsheet tracked-changes import
Source: CVE Program / CVE List V5
Vulnerability Description
LibreOffice Calc can import tracked changes from a spreadsheet document. A heap buffer overflow existed when a document reused the same change identifier for two different kinds of change. The importer then treated one change object as a different, larger type and wrote past the end of its allocation. In fixed versions records with a duplicate identifier are rejected.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:P
Source: CVE Program / CVE List V5
Vulnerability Type
使用不兼容类型访问资源(类型混淆)
Source: CVE Program / CVE List V5
Vulnerability Title
The Document Foundation LibreOffice 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
The Document Foundation LibreOffice是The Document Foundation的办公套件。 The Document Foundation LibreOffice存在缓冲区错误漏洞，该漏洞源于导入电子表格文档中的修订变更时，对于重复使用的相同变更标识符，导入器会将一个变更对象视为不同且更大的类型，导致堆缓冲区溢出，从而可能写入超出分配内存区域。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
The Document Foundation LibreOffice 25.8 ~ < 25.8.7 -

II. Public POCs for CVE-2026-8358

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-8358

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-8358 (1)

Same Patch Batch · The Document Foundation · 2026-06-15 · 7 CVEs total

CVE-2026-6040 5.4 MEDIUM Heap use-after-free in ODF number-format blank-width parsing
CVE-2026-6045 5.4 MEDIUM Heap buffer overflow in EMF+ gradient brush import
CVE-2026-8357 5.4 MEDIUM Heap buffer overflow in Calc formula compilation
CVE-2026-6039 Heap buffer overflow in DXF polyline import
CVE-2026-6047 Heap buffer overflow in OOXML text box element import
CVE-2026-8356 Stack buffer overflow in PPT presentation import

IV. Related Vulnerabilities

Same product: LibreOffice
Same vendor: The Document Foundation
Same weakness: CWE-843

V. Comments for CVE-2026-8358

No comments yet

Leave a comment